How can I populate a 2D array with a textbox

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C#

So here's the thing,
I have a Textbox with this format:
1,Goku
2,Krillin
3,Friezer
and so on...

and I have an array like this:
array[,] arrDBZ;

I want that for every line in the text file populate my array for example:
arrDBZ would have this values:
arrDBZ[1,Goku]
arrDBZ[2,Krillin]
arrDBZ[3,Friezer]
and so on...

How can i do this?
So far I have this code I found on google:

using (OpenFileDialog fdText=new OpenFileDialog())
            {
                fdText.Filter="Text Files (*.txt)|*.txt";
                fdText.InitialDirectory = Environment.SpecialFolder.MyDocuments.ToString();
                fdText.Multiselect = false;
                fdText.Title = "SELECT TEXT FILE";
                if (fdText.ShowDialog() == DialogResult.OK)
                {
                    string data = System.IO.File.ReadAllText(fdText.FileName);
                    string[,] parsedData;

                    var res = data.Split(',')
                    .Select(p => Regex.Split(p, "(?<=\\G.{2})"))
                    .ToArray();

                    var twoD = new String[res.Length, res[0].Length];
                    for (int i = 0; i != res.Length; i++)
                        for (int j = 0; j != res[0].Length; j++)
                            twoD[i, j] = res[i][j];
                    txtLoc.Text = fdText.FileName;

                    parsedData = twoD;
                }

But this only populate the second column:
arrDBZ[0,0] would be arrDBZ[null,Goku], arrDBZ[null,Krillin] and so on...

I hope someone can help me with this.

Thanks.